As of iOS 9.0 on iPad Airs and newer, Virtual Sandtray gives you the capability to record video in the application.
When a point is reached where you would like to start recording, tap on the video camera icon. You will be presented with a dialog that will ask you if you want to record audio with the video, simply select your preference. The application is recording when you see a green dot on the video camera icon. To stop, tap on the video camera icon. At this point, you will go into your camera roll video editor. To save, tap on the "Save" button at the upper right. At this point you will be returned to Virtual Sandtray.
The videos taken by Virtual Sandtray are stored in your cameral roll. This is a familiar interface, from which you can send or share the picture. You can share, edit or delete the picture.